OpenSSL CHANGES
_______________
- Changes between 0.9.3a and 0.9.4 [xx Jul/Aug/...? 1999]
+ Changes between 0.9.5a and 0.9.6 [xx XXX 2000]
+
+ *) Don't set the two most significant bits to one when generating a
+ random number < q in the DSA library.
+ [Ulf Möller]
+
+ *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
+ behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
+ the underlying transport is blocking) if a handshake took place.
+ (The default behaviour is needed by applications such as s_client
+ and s_server that use select() to determine when to use SSL_read;
+ but for applications that know in advance when to expect data, it
+ just makes things more complicated.)
+ [Bodo Moeller]
+
+ *) Add RAND_egd_bytes(), which gives control over the number of bytes read
+ from EGD.
+ [Ben Laurie]
+
+ *) Add a few more EBCDIC conditionals that make `req' and `x509'
+ work better on such systems.
+ [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
+
+ *) Add two demo programs for PKCS12_parse() and PKCS12_create().
+ Update PKCS12_parse() so it copies the friendlyName and the
+ keyid to the certificates aux info.
+ [Steve Henson]
+
+ *) Fix bug in PKCS7_verify() which caused an infinite loop
+ if there was more than one signature.
+ [Sven Uszpelkat <su@celocom.de>]
+
+ *) Major change in util/mkdef.pl to include extra information
+ about each symbol, as well as presentig variables as well
+ as functions. This change means that there's n more need
+ to rebuild the .num files when some algorithms are excluded.
+ [Richard Levitte]
+
+ *) Allow the verify time to be set by an application,
+ rather than always using the current time.
+ [Steve Henson]
+
+ *) Phase 2 verify code reorganisation. The certificate
+ verify code now looks up an issuer certificate by a
+ number of criteria: subject name, authority key id
+ and key usage. It also verifies self signed certificates
+ by the same criteria. The main comparison function is
+ X509_check_issued() which performs these checks.
+
+ Lot of changes were necessary in order to support this
+ without completely rewriting the lookup code.
+
+ Authority and subject key identifier are now cached.
+
+ The LHASH 'certs' is X509_STORE has now been replaced
+ by a STACK_OF(X509_OBJECT). This is mainly because an
+ LHASH can't store or retrieve multiple objects with
+ the same hash value.
+
+ As a result various functions (which were all internal
+ use only) have changed to handle the new X509_STORE
+ structure. This will break anything that messed round
+ with X509_STORE internally.
+
+ The functions X509_STORE_add_cert() now checks for an
+ exact match, rather than just subject name.
+
+ The X509_STORE API doesn't directly support the retrieval
+ of multiple certificates matching a given criteria, however
+ this can be worked round by performing a lookup first
+ (which will fill the cache with candidate certificates)
+ and then examining the cache for matches. This is probably
+ the best we can do without throwing out X509_LOOKUP
+ entirely (maybe later...).
+
+ The X509_VERIFY_CTX structure has been enhanced considerably.
+
+ All certificate lookup operations now go via a get_issuer()
+ callback. Although this currently uses an X509_STORE it
+ can be replaced by custom lookups. This is a simple way
+ to bypass the X509_STORE hackery necessary to make this
+ work and makes it possible to use more efficient techniques
+ in future. A very simple version which uses a simple
+ STACK for its trusted certificate store is also provided
+ using X509_STORE_CTX_trusted_stack().
+
+ The verify_cb() and verify() callbacks now have equivalents
+ in the X509_STORE_CTX structure.
+
+ X509_STORE_CTX also has a 'flags' field which can be used
+ to customise the verify behaviour.
+ [Steve Henson]
+
+ *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
+ excludes S/MIME capabilities.
+ [Steve Henson]
+
+ *) When a certificate request is read in keep a copy of the
+ original encoding of the signed data and use it when outputing
+ again. Signatures then use the original encoding rather than
+ a decoded, encoded version which may cause problems if the
+ request is improperly encoded.
+ [Steve Henson]
+
+ *) For consistency with other BIO_puts implementations, call
+ buffer_write(b, ...) directly in buffer_puts instead of calling
+ BIO_write(b, ...).
+
+ In BIO_puts, increment b->num_write as in BIO_write.
+ [Peter.Sylvester@EdelWeb.fr]
+
+ *) Fix BN_mul_word for the case where the word is 0. (We have to use
+ BN_zero, we may not return a BIGNUM with an array consisting of
+ words set to zero.)
+ [Bodo Moeller]
+
+ *) Avoid calling abort() from within the library when problems are
+ detected, except if preprocessor symbols have been defined
+ (such as REF_CHECK, BN_DEBUG etc.).
+ [Bodo Moeller]
+
+ *) New openssl application 'rsautl'. This utility can be
+ used for low level RSA operations. DER public key
+ BIO/fp routines also added.
+ [Steve Henson]
+
+ *) New Configure entry and patches for compiling on QNX 4.
+ [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
+
+ *) A demo state-machine implementation was sponsored by
+ Nuron (http://www.nuron.com/) and is now available in
+ demos/state_machine.
+ [Ben Laurie]
+
+ *) New options added to the 'dgst' utility for signature
+ generation and verification.
+ [Steve Henson]
+
+ *) Unrecognized PKCS#7 content types are now handled via a
+ catch all ASN1_TYPE structure. This allows unsupported
+ types to be stored as a "blob" and an application can
+ encode and decode it manually.
+ [Steve Henson]
+
+ *) Fix various signed/unsigned issues to make a_strex.c
+ compile under VC++.
+ [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
+
+ *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
+ length if passed a buffer. ASN1_INTEGER_to_BN failed
+ if passed a NULL BN and its argument was negative.
+ [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
+
+ *) Modification to PKCS#7 encoding routines to output definite
+ length encoding. Since currently the whole structures are in
+ memory there's not real point in using indefinite length
+ constructed encoding. However if OpenSSL is compiled with
+ the flag PKCS7_INDEFINITE_ENCODING the old form is used.
+ [Steve Henson]
+
+ *) Added BIO_vprintf() and BIO_vsnprintf().
+ [Richard Levitte]
+
+ *) Added more prefixes to parse for in the the strings written
+ through a logging bio, to cover all the levels that are available
+ through syslog. The prefixes are now:
+
+ PANIC, EMERG, EMR => LOG_EMERG
+ ALERT, ALR => LOG_ALERT
+ CRIT, CRI => LOG_CRIT
+ ERROR, ERR => LOG_ERR
+ WARNING, WARN, WAR => LOG_WARNING
+ NOTICE, NOTE, NOT => LOG_NOTICE
+ INFO, INF => LOG_INFO
+ DEBUG, DBG => LOG_DEBUG
+
+ and as before, if none of those prefixes are present at the
+ beginning of the string, LOG_ERR is chosen.
+
+ On Win32, the LOG_* levels are mapped according to this:
+
+ LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
+ LOG_WARNING => EVENTLOG_WARNING_TYPE
+ LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
+
+ [Richard Levitte]
+
+ *) Made it possible to reconfigure with just the configuration
+ argument "reconf" or "reconfigure". The command line arguments
+ are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
+ and are retrieved from there when reconfiguring.
+ [Richard Levitte]
+
+ *) MD4 implemented.
+ [Assar Westerlund <assar@sics.se>, Richard Levitte]
+
+ *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
+ [Richard Levitte]
+
+ *) The obj_dat.pl script was messing up the sorting of object
+ names. The reason was that it compared the quoted version
+ of strings as a result "OCSP" > "OCSP Signing" because
+ " > SPACE. Changed script to store unquoted versions of
+ names and add quotes on output. It was also omitting some
+ names from the lookup table if they were given a default
+ value (that is if SN is missing it is given the same
+ value as LN and vice versa), these are now added on the
+ grounds that if an object has a name we should be able to
+ look it up. Finally added warning output when duplicate
+ short or long names are found.
+ [Steve Henson]
+
+ *) Changes needed for Tandem NSK.
+ [Scott Uroff scott@xypro.com]
+
+ *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
+ RSA_padding_check_SSLv23(), special padding was never detected
+ and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
+ version rollback attacks was not effective.
+
+ In s23_clnt.c, don't use special rollback-attack detection padding
+ (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
+ client; similarly, in s23_srvr.c, don't do the rollback check if
+ SSL 2.0 is the only protocol enabled in the server.
+ [Bodo Moeller]
+
+ *) Make it possible to get hexdumps of unprintable data with 'openssl
+ asn1parse'. By implication, the functions ASN1_parse_dump() and
+ BIO_dump_indent() are added.
+ [Richard Levitte]
+
+ *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
+ these print out strings and name structures based on various
+ flags including RFC2253 support and proper handling of
+ multibyte characters. Added options to the 'x509' utility
+ to allow the various flags to be set.
+ [Steve Henson]
+
+ *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
+ Also change the functions X509_cmp_current_time() and
+ X509_gmtime_adj() work with an ASN1_TIME structure,
+ this will enable certificates using GeneralizedTime in validity
+ dates to be checked.
+ [Steve Henson]
+
+ *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
+ negative public key encodings) on by default,
+ NO_NEG_PUBKEY_BUG can be set to disable it.
+ [Steve Henson]
+
+ *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
+ content octets. An i2c_ASN1_OBJECT is unnecessary because
+ the encoding can be trivially obtained from the structure.
+ [Steve Henson]
+
+ *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
+ not read locks (CRYPTO_r_[un]lock).
+ [Bodo Moeller]
+
+ *) A first attempt at creating official support for shared
+ libraries through configuration. I've kept it so the
+ default is static libraries only, and the OpenSSL programs
+ are always statically linked for now, but there are
+ preparations for dynamic linking in place.
+ This has been tested on Linux and True64.
+ [Richard Levitte]
+
+ *) Randomness polling function for Win9x, as described in:
+ Peter Gutmann, Software Generation of Practically Strong
+ Random Numbers.
+ [Ulf Möller]
+
+ *) Fix so PRNG is seeded in req if using an already existing
+ DSA key.
+ [Steve Henson]
+
+ *) New options to smime application. -inform and -outform
+ allow alternative formats for the S/MIME message including
+ PEM and DER. The -content option allows the content to be
+ specified separately. This should allow things like Netscape
+ form signing output easier to verify.
+ [Steve Henson]
+
+ *) Fix the ASN1 encoding of tags using the 'long form'.
+ [Steve Henson]
+
+ *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
+ STRING types. These convert content octets to and from the
+ underlying type. The actual tag and length octets are
+ already assumed to have been read in and checked. These
+ are needed because all other string types have virtually
+ identical handling apart from the tag. By having versions
+ of the ASN1 functions that just operate on content octets
+ IMPLICIT tagging can be handled properly. It also allows
+ the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
+ and ASN1_INTEGER are identical apart from the tag.
+ [Steve Henson]
+
+ *) Change the handling of OID objects as follows:
+
+ - New object identifiers are inserted in objects.txt, following
+ the syntax given in objects.README.
+ - objects.pl is used to process obj_mac.num and create a new
+ obj_mac.h.
+ - obj_dat.pl is used to create a new obj_dat.h, using the data in
+ obj_mac.h.
+
+ This is currently kind of a hack, and the perl code in objects.pl
+ isn't very elegant, but it works as I intended. The simplest way
+ to check that it worked correctly is to look in obj_dat.h and
+ check the array nid_objs and make sure the objects haven't moved
+ around (this is important!). Additions are OK, as well as
+ consistent name changes.
+ [Richard Levitte]
+
+ *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
+ [Bodo Moeller]
+
+ *) Addition of the command line parameter '-rand file' to 'openssl req'.
+ The given file adds to whatever has already been seeded into the
+ random pool through the RANDFILE configuration file option or
+ environment variable, or the default random state file.
+ [Richard Levitte]
+
+ *) mkstack.pl now sorts each macro group into lexical order.
+ Previously the output order depended on the order the files
+ appeared in the directory, resulting in needless rewriting
+ of safestack.h .
+ [Steve Henson]
+
+ *) Patches to make OpenSSL compile under Win32 again. Mostly
+ work arounds for the VC++ problem that it treats func() as
+ func(void). Also stripped out the parts of mkdef.pl that
+ added extra typesafe functions: these no longer exist.
+ [Steve Henson]
+
+ *) Reorganisation of the stack code. The macros are now all
+ collected in safestack.h . Each macro is defined in terms of
+ a "stack macro" of the form SKM_<name>(type, a, b). The
+ DEBUG_SAFESTACK is now handled in terms of function casts,
+ this has the advantage of retaining type safety without the
+ use of additional functions. If DEBUG_SAFESTACK is not defined
+ then the non typesafe macros are used instead. Also modified the
+ mkstack.pl script to handle the new form. Needs testing to see
+ if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
+ the default if no major problems. Similar behaviour for ASN1_SET_OF
+ and PKCS12_STACK_OF.
+ [Steve Henson]
+
+ *) When some versions of IIS use the 'NET' form of private key the
+ key derivation algorithm is different. Normally MD5(password) is
+ used as a 128 bit RC4 key. In the modified case
+ MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
+ new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
+ as the old Netscape_RSA functions except they have an additional
+ 'sgckey' parameter which uses the modified algorithm. Also added
+ an -sgckey command line option to the rsa utility. Thanks to
+ Adrian Peck <bertie@ncipher.com> for posting details of the modified
+ algorithm to openssl-dev.
+ [Steve Henson]
+
+ *) The evp_local.h macros were using 'c.##kname' which resulted in
+ invalid expansion on some systems (SCO 5.0.5 for example).
+ Corrected to 'c.kname'.
+ [Phillip Porch <root@theporch.com>]
+
+ *) New X509_get1_email() and X509_REQ_get1_email() functions that return
+ a STACK of email addresses from a certificate or request, these look
+ in the subject name and the subject alternative name extensions and
+ omit any duplicate addresses.
+ [Steve Henson]
+
+ *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
+ This makes DSA verification about 2 % faster.
+ [Bodo Moeller]
+
+ *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
+ (meaning that now 2^5 values will be precomputed, which is only 4 KB
+ plus overhead for 1024 bit moduli).
+ This makes exponentiations about 0.5 % faster for 1024 bit
+ exponents (as measured by "openssl speed rsa2048").
+ [Bodo Moeller]
+
+ *) Rename memory handling macros to avoid conflicts with other
+ software:
+ Malloc => OPENSSL_malloc
+ Malloc_locked => OPENSSL_malloc_locked
+ Realloc => OPENSSL_realloc
+ Free => OPENSSL_free
+ [Richard Levitte]
+
+ *) New function BN_mod_exp_mont_word for small bases (roughly 15%
+ faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
+ [Bodo Moeller]
+
+ *) CygWin32 support.
+ [John Jarvie <jjarvie@newsguy.com>]
+
+ *) The type-safe stack code has been rejigged. It is now only compiled
+ in when OpenSSL is configured with the DEBUG_SAFESTACK option and
+ by default all type-specific stack functions are "#define"d back to
+ standard stack functions. This results in more streamlined output
+ but retains the type-safety checking possibilities of the original
+ approach.
+ [Geoff Thorpe]
+
+ *) The STACK code has been cleaned up, and certain type declarations
+ that didn't make a lot of sense have been brought in line. This has
+ also involved a cleanup of sorts in safestack.h to more correctly
+ map type-safe stack functions onto their plain stack counterparts.
+ This work has also resulted in a variety of "const"ifications of
+ lots of the code, especially "_cmp" operations which should normally
+ be prototyped with "const" parameters anyway.
+ [Geoff Thorpe]
+
+ *) When generating bytes for the first time in md_rand.c, 'stir the pool'
+ by seeding with STATE_SIZE dummy bytes (with zero entropy count).
+ (The PRNG state consists of two parts, the large pool 'state' and 'md',
+ where all of 'md' is used each time the PRNG is used, but 'state'
+ is used only indexed by a cyclic counter. As entropy may not be
+ well distributed from the beginning, 'md' is important as a
+ chaining variable. However, the output function chains only half
+ of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
+ all of 'md', and seeding with STATE_SIZE dummy bytes will result
+ in all of 'state' being rewritten, with the new values depending
+ on virtually all of 'md'. This overcomes the 80 bit limitation.)
+ [Bodo Moeller]
+
+ *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
+ the handshake is continued after ssl_verify_cert_chain();
+ otherwise, if SSL_VERIFY_NONE is set, remaining error codes
+ can lead to 'unexplainable' connection aborts later.
+ [Bodo Moeller; problem tracked down by Lutz Jaenicke]
+
+ *) Major EVP API cipher revision.
+ Add hooks for extra EVP features. This allows various cipher
+ parameters to be set in the EVP interface. Support added for variable
+ key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
+ setting of RC2 and RC5 parameters.
+
+ Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
+ ciphers.
+
+ Remove lots of duplicated code from the EVP library. For example *every*
+ cipher init() function handles the 'iv' in the same way according to the
+ cipher mode. They also all do nothing if the 'key' parameter is NULL and
+ for CFB and OFB modes they zero ctx->num.
+
+ New functionality allows removal of S/MIME code RC2 hack.
+
+ Most of the routines have the same form and so can be declared in terms
+ of macros.
+
+ By shifting this to the top level EVP_CipherInit() it can be removed from
+ all individual ciphers. If the cipher wants to handle IVs or keys
+ differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
+ flags.
+
+ Change lots of functions like EVP_EncryptUpdate() to now return a
+ value: although software versions of the algorithms cannot fail
+ any installed hardware versions can.
+ [Steve Henson]
+
+ *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
+ this option is set, tolerate broken clients that send the negotiated
+ protocol version number instead of the requested protocol version
+ number.
+ [Bodo Moeller]
+
+ *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
+ i.e. non-zero for export ciphersuites, zero otherwise.
+ Previous versions had this flag inverted, inconsistent with
+ rsa_tmp_cb (..._TMP_RSA_CB).
+ [Bodo Moeller; problem reported by Amit Chopra]
+
+ *) Add missing DSA library text string. Work around for some IIS
+ key files with invalid SEQUENCE encoding.
+ [Steve Henson]
+
+ *) Add a document (doc/standards.txt) that list all kinds of standards
+ and so on that are implemented in OpenSSL.
+ [Richard Levitte]
+
+ *) Enhance c_rehash script. Old version would mishandle certificates
+ with the same subject name hash and wouldn't handle CRLs at all.
+ Added -fingerprint option to crl utility, to support new c_rehash
+ features.
+ [Steve Henson]
+
+ *) Eliminate non-ANSI declarations in crypto.h and stack.h.
+ [Ulf Möller]
+
+ *) Fix for SSL server purpose checking. Server checking was
+ rejecting certificates which had extended key usage present
+ but no ssl client purpose.
+ [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
+
+ *) Make PKCS#12 code work with no password. The PKCS#12 spec
+ is a little unclear about how a blank password is handled.
+ Since the password in encoded as a BMPString with terminating
+ double NULL a zero length password would end up as just the
+ double NULL. However no password at all is different and is
+ handled differently in the PKCS#12 key generation code. NS
+ treats a blank password as zero length. MSIE treats it as no
+ password on export: but it will try both on import. We now do
+ the same: PKCS12_parse() tries zero length and no password if
+ the password is set to "" or NULL (NULL is now a valid password:
+ it wasn't before) as does the pkcs12 application.
+ [Steve Henson]
+
+ *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
+ perror when PEM_read_bio_X509_REQ fails, the error message must
+ be obtained from the error queue.
+ [Bodo Moeller]
+
+ *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
+ it in ERR_remove_state if appropriate, and change ERR_get_state
+ accordingly to avoid race conditions (this is necessary because
+ thread_hash is no longer constant once set).
+ [Bodo Moeller]
+
+ *) Bugfix for linux-elf makefile.one.
+ [Ulf Möller]
+
+ *) RSA_get_default_method() will now cause a default
+ RSA_METHOD to be chosen if one doesn't exist already.
+ Previously this was only set during a call to RSA_new()
+ or RSA_new_method(NULL) meaning it was possible for
+ RSA_get_default_method() to return NULL.
+ [Geoff Thorpe]
+
+ *) Added native name translation to the existing DSO code
+ that will convert (if the flag to do so is set) filenames
+ that are sufficiently small and have no path information
+ into a canonical native form. Eg. "blah" converted to
+ "libblah.so" or "blah.dll" etc.
+ [Geoff Thorpe]
+
+ *) New function ERR_error_string_n(e, buf, len) which is like
+ ERR_error_string(e, buf), but writes at most 'len' bytes
+ including the 0 terminator. For ERR_error_string_n, 'buf'
+ may not be NULL.
+ [Damien Miller <djm@mindrot.org>, Bodo Moeller]
+
+ *) CONF library reworked to become more general. A new CONF
+ configuration file reader "class" is implemented as well as a
+ new functions (NCONF_*, for "New CONF") to handle it. The now
+ old CONF_* functions are still there, but are reimplemented to
+ work in terms of the new functions. Also, a set of functions
+ to handle the internal storage of the configuration data is
+ provided to make it easier to write new configuration file
+ reader "classes" (I can definitely see something reading a
+ configuration file in XML format, for example), called _CONF_*,
+ or "the configuration storage API"...
+
+ The new configuration file reading functions are:
+
+ NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
+ NCONF_get_section, NCONF_get_string, NCONF_get_numbre
+
+ NCONF_default, NCONF_WIN32
+
+ NCONF_dump_fp, NCONF_dump_bio
+
+ NCONF_default and NCONF_WIN32 are method (or "class") choosers,
+ NCONF_new creates a new CONF object. This works in the same way
+ as other interfaces in OpenSSL, like the BIO interface.
+ NCONF_dump_* dump the internal storage of the configuration file,
+ which is useful for debugging. All other functions take the same
+ arguments as the old CONF_* functions wth the exception of the
+ first that must be a `CONF *' instead of a `LHASH *'.
+
+ To make it easer to use the new classes with the old CONF_* functions,
+ the function CONF_set_default_method is provided.
+ [Richard Levitte]
+
+ *) Add '-tls1' option to 'openssl ciphers', which was already
+ mentioned in the documentation but had not been implemented.
+ (This option is not yet really useful because even the additional
+ experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
+ [Bodo Moeller]
+
+ *) Initial DSO code added into libcrypto for letting OpenSSL (and
+ OpenSSL-based applications) load shared libraries and bind to
+ them in a portable way.
+ [Geoff Thorpe, with contributions from Richard Levitte]
+
+ Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
+
+ *) Make sure _lrotl and _lrotr are only used with MSVC.
+
+ *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
+ (the default implementation of RAND_status).
+
+ *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
+ to '-clrext' (= clear extensions), as intended and documented.
+ [Bodo Moeller; inconsistency pointed out by Michael Attili
+ <attili@amaxo.com>]
+
+ *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
+ was larger than the MD block size.
+ [Steve Henson, pointed out by Yost William <YostW@tce.com>]
+
+ *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
+ fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
+ using the passed key: if the passed key was a private key the result
+ of X509_print(), for example, would be to print out all the private key
+ components.
+ [Steve Henson]
+
+ *) des_quad_cksum() byte order bug fix.
+ [Ulf Möller, using the problem description in krb4-0.9.7, where
+ the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
+
+ *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
+ discouraged.
+ [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
+
+ *) For easily testing in shell scripts whether some command
+ 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
+ returns with exit code 0 iff no command of the given name is available.
+ 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
+ the output goes to stdout and nothing is printed to stderr.
+ Additional arguments are always ignored.
+
+ Since for each cipher there is a command of the same name,
+ the 'no-cipher' compilation switches can be tested this way.
+
+ ('openssl no-XXX' is not able to detect pseudo-commands such
+ as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
+ [Bodo Moeller]
+
+ *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
+ [Bodo Moeller]
+
+ *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
+ is set; it will be thrown away anyway because each handshake creates
+ its own key.
+ ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
+ to parameters -- in previous versions (since OpenSSL 0.9.3) the
+ 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
+ you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
+ [Bodo Moeller]
+
+ *) New s_client option -ign_eof: EOF at stdin is ignored, and
+ 'Q' and 'R' lose their special meanings (quit/renegotiate).
+ This is part of what -quiet does; unlike -quiet, -ign_eof
+ does not suppress any output.
+ [Richard Levitte]
+
+ *) Add compatibility options to the purpose and trust code. The
+ purpose X509_PURPOSE_ANY is "any purpose" which automatically
+ accepts a certificate or CA, this was the previous behaviour,
+ with all the associated security issues.
+
+ X509_TRUST_COMPAT is the old trust behaviour: only and
+ automatically trust self signed roots in certificate store. A
+ new trust setting X509_TRUST_DEFAULT is used to specify that
+ a purpose has no associated trust setting and it should instead
+ use the value in the default purpose.
+ [Steve Henson]
+
+ *) Fix the PKCS#8 DSA private key code so it decodes keys again
+ and fix a memory leak.
+ [Steve Henson]
+
+ *) In util/mkerr.pl (which implements 'make errors'), preserve
+ reason strings from the previous version of the .c file, as
+ the default to have only downcase letters (and digits) in
+ automatically generated reasons codes is not always appropriate.
+ [Bodo Moeller]
+
+ *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
+ using strerror. Previously, ERR_reason_error_string() returned
+ library names as reason strings for SYSerr; but SYSerr is a special
+ case where small numbers are errno values, not library numbers.
+ [Bodo Moeller]
+
+ *) Add '-dsaparam' option to 'openssl dhparam' application. This
+ converts DSA parameters into DH parameters. (When creating parameters,
+ DSA_generate_parameters is used.)
+ [Bodo Moeller]
+
+ *) Include 'length' (recommended exponent length) in C code generated
+ by 'openssl dhparam -C'.
+ [Bodo Moeller]
+
+ *) The second argument to set_label in perlasm was already being used
+ so couldn't be used as a "file scope" flag. Moved to third argument
+ which was free.
+ [Steve Henson]
+
+ *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
+ instead of RAND_bytes for encryption IVs and salts.
+ [Bodo Moeller]
+
+ *) Include RAND_status() into RAND_METHOD instead of implementing
+ it only for md_rand.c Otherwise replacing the PRNG by calling
+ RAND_set_rand_method would be impossible.
+ [Bodo Moeller]
+
+ *) Don't let DSA_generate_key() enter an infinite loop if the random
+ number generation fails.
+ [Bodo Moeller]
+
+ *) New 'rand' application for creating pseudo-random output.
+ [Bodo Moeller]
+
+ *) Added configuration support for Linux/IA64
+ [Rolf Haberrecker <rolf@suse.de>]
+
+ *) Assembler module support for Mingw32.
+ [Ulf Möller]
+
+ *) Shared library support for HPUX (in shlib/).
+ [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
+
+ *) Shared library support for Solaris gcc.
+ [Lutz Behnke <behnke@trustcenter.de>]
+
+ Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
+
+ *) PKCS7_encrypt() was adding text MIME headers twice because they
+ were added manually and by SMIME_crlf_copy().
+ [Steve Henson]
+
+ *) In bntest.c don't call BN_rand with zero bits argument.
+ [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
+
+ *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
+ case was implemented. This caused BN_div_recp() to fail occasionally.
+ [Ulf Möller]
+
+ *) Add an optional second argument to the set_label() in the perl
+ assembly language builder. If this argument exists and is set
+ to 1 it signals that the assembler should use a symbol whose
+ scope is the entire file, not just the current function. This
+ is needed with MASM which uses the format label:: for this scope.
+ [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
+
+ *) Change the ASN1 types so they are typedefs by default. Before
+ almost all types were #define'd to ASN1_STRING which was causing
+ STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
+ for example.
+ [Steve Henson]
+
+ *) Change names of new functions to the new get1/get0 naming
+ convention: After 'get1', the caller owns a reference count
+ and has to call ..._free; 'get0' returns a pointer to some
+ data structure without incrementing reference counters.
+ (Some of the existing 'get' functions increment a reference
+ counter, some don't.)
+ Similarly, 'set1' and 'add1' functions increase reference
+ counters or duplicate objects.
+ [Steve Henson]
+
+ *) Allow for the possibility of temp RSA key generation failure:
+ the code used to assume it always worked and crashed on failure.
+ [Steve Henson]
+
+ *) Fix potential buffer overrun problem in BIO_printf().
+ [Ulf Möller, using public domain code by Patrick Powell; problem
+ pointed out by David Sacerdote <das33@cornell.edu>]
+
+ *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
+ RAND_egd() and RAND_status(). In the command line application,
+ the EGD socket can be specified like a seed file using RANDFILE
+ or -rand.
+ [Ulf Möller]
+
+ *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
+ Some CAs (e.g. Verisign) distribute certificates in this form.
+ [Steve Henson]
+
+ *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
+ list to exclude them. This means that no special compilation option
+ is needed to use anonymous DH: it just needs to be included in the
+ cipher list.
+ [Steve Henson]
+
+ *) Change the EVP_MD_CTX_type macro so its meaning consistent with
+ EVP_MD_type. The old functionality is available in a new macro called
+ EVP_MD_md(). Change code that uses it and update docs.
+ [Steve Henson]
+
+ *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
+ where the 'void *' argument is replaced by a function pointer argument.
+ Previously 'void *' was abused to point to functions, which works on
+ many platforms, but is not correct. As these functions are usually
+ called by macros defined in OpenSSL header files, most source code
+ should work without changes.
+ [Richard Levitte]
+
+ *) <openssl/opensslconf.h> (which is created by Configure) now contains
+ sections with information on -D... compiler switches used for
+ compiling the library so that applications can see them. To enable
+ one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
+ must be defined. E.g.,
+ #define OPENSSL_ALGORITHM_DEFINES
+ #include <openssl/opensslconf.h>
+ defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
+ [Richard Levitte, Ulf and Bodo Möller]
+
+ *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
+ record layer.
+ [Bodo Moeller]
+
+ *) Change the 'other' type in certificate aux info to a STACK_OF
+ X509_ALGOR. Although not an AlgorithmIdentifier as such it has
+ the required ASN1 format: arbitrary types determined by an OID.
+ [Steve Henson]
+
+ *) Add some PEM_write_X509_REQ_NEW() functions and a command line
+ argument to 'req'. This is not because the function is newer or
+ better than others it just uses the work 'NEW' in the certificate
+ request header lines. Some software needs this.
+ [Steve Henson]
+
+ *) Reorganise password command line arguments: now passwords can be
+ obtained from various sources. Delete the PEM_cb function and make
+ it the default behaviour: i.e. if the callback is NULL and the
+ usrdata argument is not NULL interpret it as a null terminated pass
+ phrase. If usrdata and the callback are NULL then the pass phrase
+ is prompted for as usual.
+ [Steve Henson]
+
+ *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
+ the support is automatically enabled. The resulting binaries will
+ autodetect the card and use it if present.
+ [Ben Laurie and Compaq Inc.]
+
+ *) Work around for Netscape hang bug. This sends certificate request
+ and server done in one record. Since this is perfectly legal in the
+ SSL/TLS protocol it isn't a "bug" option and is on by default. See
+ the bugs/SSLv3 entry for more info.
+ [Steve Henson]
+
+ *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
+ [Andy Polyakov]
+
+ *) Add -rand argument to smime and pkcs12 applications and read/write
+ of seed file.
+ [Steve Henson]
+
+ *) New 'passwd' tool for crypt(3) and apr1 password hashes.
+ [Bodo Moeller]
+
+ *) Add command line password options to the remaining applications.
+ [Steve Henson]
+
+ *) Bug fix for BN_div_recp() for numerators with an even number of
+ bits.
+ [Ulf Möller]
+
+ *) More tests in bntest.c, and changed test_bn output.
+ [Ulf Möller]
+
+ *) ./config recognizes MacOS X now.
+ [Andy Polyakov]
+
+ *) Bug fix for BN_div() when the first words of num and divsor are
+ equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
+ [Ulf Möller]
+
+ *) Add support for various broken PKCS#8 formats, and command line
+ options to produce them.
+ [Steve Henson]
+
+ *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
+ get temporary BIGNUMs from a BN_CTX.
+ [Ulf Möller]
+
+ *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
+ for p == 0.
+ [Ulf Möller]
+
+ *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
+ include a #define from the old name to the new. The original intent
+ was that statically linked binaries could for example just call
+ SSLeay_add_all_ciphers() to just add ciphers to the table and not
+ link with digests. This never worked becayse SSLeay_add_all_digests()
+ and SSLeay_add_all_ciphers() were in the same source file so calling
+ one would link with the other. They are now in separate source files.
+ [Steve Henson]
+
+ *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
+ [Steve Henson]
+
+ *) Use a less unusual form of the Miller-Rabin primality test (it used
+ a binary algorithm for exponentiation integrated into the Miller-Rabin
+ loop, our standard modexp algorithms are faster).
+ [Bodo Moeller]
+
+ *) Support for the EBCDIC character set completed.
+ [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
+
+ *) Source code cleanups: use const where appropriate, eliminate casts,
+ use void * instead of char * in lhash.
+ [Ulf Möller]
+
+ *) Bugfix: ssl3_send_server_key_exchange was not restartable
+ (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
+ this the server could overwrite ephemeral keys that the client
+ has already seen).
+ [Bodo Moeller]
+
+ *) Turn DSA_is_prime into a macro that calls BN_is_prime,
+ using 50 iterations of the Rabin-Miller test.
+
+ DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
+ iterations of the Rabin-Miller test as required by the appendix
+ to FIPS PUB 186[-1]) instead of DSA_is_prime.
+ As BN_is_prime_fasttest includes trial division, DSA parameter
+ generation becomes much faster.
+
+ This implies a change for the callback functions in DSA_is_prime
+ and DSA_generate_parameters: The callback function is called once
+ for each positive witness in the Rabin-Miller test, not just
+ occasionally in the inner loop; and the parameters to the
+ callback function now provide an iteration count for the outer
+ loop rather than for the current invocation of the inner loop.
+ DSA_generate_parameters additionally can call the callback
+ function with an 'iteration count' of -1, meaning that a
+ candidate has passed the trial division test (when q is generated
+ from an application-provided seed, trial division is skipped).
+ [Bodo Moeller]
+
+ *) New function BN_is_prime_fasttest that optionally does trial
+ division before starting the Rabin-Miller test and has
+ an additional BN_CTX * argument (whereas BN_is_prime always
+ has to allocate at least one BN_CTX).
+ 'callback(1, -1, cb_arg)' is called when a number has passed the
+ trial division stage.
+ [Bodo Moeller]
+
+ *) Fix for bug in CRL encoding. The validity dates weren't being handled
+ as ASN1_TIME.
+ [Steve Henson]
+
+ *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
+ [Steve Henson]
+
+ *) New function BN_pseudo_rand().
+ [Ulf Möller]
+
+ *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
+ bignum version of BN_from_montgomery() with the working code from
+ SSLeay 0.9.0 (the word based version is faster anyway), and clean up
+ the comments.
+ [Ulf Möller]
+
+ *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
+ made it impossible to use the same SSL_SESSION data structure in
+ SSL2 clients in multiple threads.
+ [Bodo Moeller]
+
+ *) The return value of RAND_load_file() no longer counts bytes obtained
+ by stat(). RAND_load_file(..., -1) is new and uses the complete file
+ to seed the PRNG (previously an explicit byte count was required).
+ [Ulf Möller, Bodo Möller]
+
+ *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
+ used (char *) instead of (void *) and had casts all over the place.
+ [Steve Henson]
+
+ *) Make BN_generate_prime() return NULL on error if ret!=NULL.
+ [Ulf Möller]
+
+ *) Retain source code compatibility for BN_prime_checks macro:
+ BN_is_prime(..., BN_prime_checks, ...) now uses
+ BN_prime_checks_for_size to determine the appropriate number of
+ Rabin-Miller iterations.
+ [Ulf Möller]
+
+ *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
+ DH_CHECK_P_NOT_SAFE_PRIME.
+ (Check if this is true? OpenPGP calls them "strong".)
+ [Ulf Möller]
+
+ *) Merge the functionality of "dh" and "gendh" programs into a new program
+ "dhparam". The old programs are retained for now but will handle DH keys
+ (instead of parameters) in future.
+ [Steve Henson]
+
+ *) Make the ciphers, s_server and s_client programs check the return values
+ when a new cipher list is set.
+ [Steve Henson]
+
+ *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
+ ciphers. Before when the 56bit ciphers were enabled the sorting was
+ wrong.
+
+ The syntax for the cipher sorting has been extended to support sorting by
+ cipher-strength (using the strength_bits hard coded in the tables).
+ The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
+
+ Fix a bug in the cipher-command parser: when supplying a cipher command
+ string with an "undefined" symbol (neither command nor alphanumeric
+ [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
+ an error is flagged.
+
+ Due to the strength-sorting extension, the code of the
+ ssl_create_cipher_list() function was completely rearranged. I hope that
+ the readability was also increased :-)
+ [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
+
+ *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
+ for the first serial number and places 2 in the serial number file. This
+ avoids problems when the root CA is created with serial number zero and
+ the first user certificate has the same issuer name and serial number
+ as the root CA.
+ [Steve Henson]
+
+ *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
+ the new code. Add documentation for this stuff.
+ [Steve Henson]
+
+ *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
+ X509_*() to X509at_*() on the grounds that they don't handle X509
+ structures and behave in an analagous way to the X509v3 functions:
+ they shouldn't be called directly but wrapper functions should be used
+ instead.
+
+ So we also now have some wrapper functions that call the X509at functions
+ when passed certificate requests. (TO DO: similar things can be done with
+ PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
+ things. Some of these need some d2i or i2d and print functionality
+ because they handle more complex structures.)
+ [Steve Henson]
+
+ *) Add missing #ifndefs that caused missing symbols when building libssl
+ as a shared library without RSA. Use #ifndef NO_SSL2 instead of
+ NO_RSA in ssl/s2*.c.
+ [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
+
+ *) Precautions against using the PRNG uninitialized: RAND_bytes() now
+ has a return value which indicates the quality of the random data
+ (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
+ error queue. New function RAND_pseudo_bytes() generates output that is
+ guaranteed to be unique but not unpredictable. RAND_add is like
+ RAND_seed, but takes an extra argument for an entropy estimate
+ (RAND_seed always assumes full entropy).
+ [Ulf Möller]
+
+ *) Do more iterations of Rabin-Miller probable prime test (specifically,
+ 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
+ instead of only 2 for all lengths; see BN_prime_checks_for_size definition
+ in crypto/bn/bn_prime.c for the complete table). This guarantees a
+ false-positive rate of at most 2^-80 for random input.
+ [Bodo Moeller]
+
+ *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
+ [Bodo Moeller]
+
+ *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
+ in the 0.9.5 release), this returns the chain
+ from an X509_CTX structure with a dup of the stack and all
+ the X509 reference counts upped: so the stack will exist
+ after X509_CTX_cleanup() has been called. Modify pkcs12.c
+ to use this.
+
+ Also make SSL_SESSION_print() print out the verify return
+ code.
+ [Steve Henson]
+
+ *) Add manpage for the pkcs12 command. Also change the default
+ behaviour so MAC iteration counts are used unless the new
+ -nomaciter option is used. This improves file security and
+ only older versions of MSIE (4.0 for example) need it.
+ [Steve Henson]
+
+ *) Honor the no-xxx Configure options when creating .DEF files.
+ [Ulf Möller]
+
+ *) Add PKCS#10 attributes to field table: challengePassword,
+ unstructuredName and unstructuredAddress. These are taken from
+ draft PKCS#9 v2.0 but are compatible with v1.2 provided no
+ international characters are used.
+
+ More changes to X509_ATTRIBUTE code: allow the setting of types
+ based on strings. Remove the 'loc' parameter when adding
+ attributes because these will be a SET OF encoding which is sorted
+ in ASN1 order.
+ [Steve Henson]
+
+ *) Initial changes to the 'req' utility to allow request generation
+ automation. This will allow an application to just generate a template
+ file containing all the field values and have req construct the
+ request.
+
+ Initial support for X509_ATTRIBUTE handling. Stacks of these are
+ used all over the place including certificate requests and PKCS#7
+ structures. They are currently handled manually where necessary with
+ some primitive wrappers for PKCS#7. The new functions behave in a
+ manner analogous to the X509 extension functions: they allow
+ attributes to be looked up by NID and added.
+
+ Later something similar to the X509V3 code would be desirable to
+ automatically handle the encoding, decoding and printing of the
+ more complex types. The string types like challengePassword can
+ be handled by the string table functions.
+
+ Also modified the multi byte string table handling. Now there is
+ a 'global mask' which masks out certain types. The table itself
+ can use the flag STABLE_NO_MASK to ignore the mask setting: this
+ is useful when for example there is only one permissible type
+ (as in countryName) and using the mask might result in no valid
+ types at all.
+ [Steve Henson]
+
+ *) Clean up 'Finished' handling, and add functions SSL_get_finished and
+ SSL_get_peer_finished to allow applications to obtain the latest
+ Finished messages sent to the peer or expected from the peer,
+ respectively. (SSL_get_peer_finished is usually the Finished message
+ actually received from the peer, otherwise the protocol will be aborted.)
+
+ As the Finished message are message digests of the complete handshake
+ (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
+ be used for external authentication procedures when the authentication
+ provided by SSL/TLS is not desired or is not enough.
+ [Bodo Moeller]
+
+ *) Enhanced support for Alpha Linux is added. Now ./config checks if
+ the host supports BWX extension and if Compaq C is present on the
+ $PATH. Just exploiting of the BWX extension results in 20-30%
+ performance kick for some algorithms, e.g. DES and RC4 to mention
+ a couple. Compaq C in turn generates ~20% faster code for MD5 and
+ SHA1.
+ [Andy Polyakov]
+
+ *) Add support for MS "fast SGC". This is arguably a violation of the
+ SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
+ weak crypto and after checking the certificate is SGC a second one
+ with strong crypto. MS SGC stops the first handshake after receiving
+ the server certificate message and sends a second client hello. Since
+ a server will typically do all the time consuming operations before
+ expecting any further messages from the client (server key exchange
+ is the most expensive) there is little difference between the two.
+
+ To get OpenSSL to support MS SGC we have to permit a second client
+ hello message after we have sent server done. In addition we have to
+ reset the MAC if we do get this second client hello.
+ [Steve Henson]
+
+ *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
+ if a DER encoded private key is RSA or DSA traditional format. Changed
+ d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
+ format DER encoded private key. Newer code should use PKCS#8 format which
+ has the key type encoded in the ASN1 structure. Added DER private key
+ support to pkcs8 application.
+ [Steve Henson]
+
+ *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
+ ciphersuites has been selected (as required by the SSL 3/TLS 1
+ specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
+ is set, we interpret this as a request to violate the specification
+ (the worst that can happen is a handshake failure, and 'correct'
+ behaviour would result in a handshake failure anyway).
+ [Bodo Moeller]
+
+ *) In SSL_CTX_add_session, take into account that there might be multiple
+ SSL_SESSION structures with the same session ID (e.g. when two threads
+ concurrently obtain them from an external cache).
+ The internal cache can handle only one SSL_SESSION with a given ID,
+ so if there's a conflict, we now throw out the old one to achieve
+ consistency.
+ [Bodo Moeller]
+
+ *) Add OIDs for idea and blowfish in CBC mode. This will allow both
+ to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
+ some routines that use cipher OIDs: some ciphers do not have OIDs
+ defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
+ example.
+ [Steve Henson]
+
+ *) Simplify the trust setting structure and code. Now we just have
+ two sequences of OIDs for trusted and rejected settings. These will
+ typically have values the same as the extended key usage extension
+ and any application specific purposes.
+
+ The trust checking code now has a default behaviour: it will just
+ check for an object with the same NID as the passed id. Functions can
+ be provided to override either the default behaviour or the behaviour
+ for a given id. SSL client, server and email already have functions
+ in place for compatibility: they check the NID and also return "trusted"
+ if the certificate is self signed.
+ [Steve Henson]
+
+ *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
+ traditional format into an EVP_PKEY structure.
+ [Steve Henson]
+
+ *) Add a password callback function PEM_cb() which either prompts for
+ a password if usr_data is NULL or otherwise assumes it is a null
+ terminated password. Allow passwords to be passed on command line
+ environment or config files in a few more utilities.
+ [Steve Henson]
+
+ *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
+ keys. Add some short names for PKCS#8 PBE algorithms and allow them
+ to be specified on the command line for the pkcs8 and pkcs12 utilities.
+ Update documentation.
+ [Steve Henson]
+
+ *) Support for ASN1 "NULL" type. This could be handled before by using
+ ASN1_TYPE but there wasn't any function that would try to read a NULL
+ and produce an error if it couldn't. For compatibility we also have
+ ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
+ don't allocate anything because they don't need to.
+ [Steve Henson]
+
+ *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
+ for details.
+ [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
+
+ *) Rebuild of the memory allocation routines used by OpenSSL code and
+ possibly others as well. The purpose is to make an interface that
+ provide hooks so anyone can build a separate set of allocation and
+ deallocation routines to be used by OpenSSL, for example memory
+ pool implementations, or something else, which was previously hard
+ since Malloc(), Realloc() and Free() were defined as macros having
+ the values malloc, realloc and free, respectively (except for Win32
+ compilations). The same is provided for memory debugging code.
+ OpenSSL already comes with functionality to find memory leaks, but
+ this gives people a chance to debug other memory problems.
+
+ With these changes, a new set of functions and macros have appeared:
+
+ CRYPTO_set_mem_debug_functions() [F]
+ CRYPTO_get_mem_debug_functions() [F]
+ CRYPTO_dbg_set_options() [F]
+ CRYPTO_dbg_get_options() [F]
+ CRYPTO_malloc_debug_init() [M]
+
+ The memory debug functions are NULL by default, unless the library
+ is compiled with CRYPTO_MDEBUG or friends is defined. If someone
+ wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
+ gives the standard debugging functions that come with OpenSSL) or
+ CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
+ provided by the library user) must be used. When the standard
+ debugging functions are used, CRYPTO_dbg_set_options can be used to
+ request additional information:
+ CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
+ the CRYPTO_MDEBUG_xxx macro when compiling the library.
+
+ Also, things like CRYPTO_set_mem_functions will always give the
+ expected result (the new set of functions is used for allocation
+ and deallocation) at all times, regardless of platform and compiler
+ options.
+
+ To finish it up, some functions that were never use in any other
+ way than through macros have a new API and new semantic:
+
+ CRYPTO_dbg_malloc()
+ CRYPTO_dbg_realloc()
+ CRYPTO_dbg_free()
+
+ All macros of value have retained their old syntax.
+ [Richard Levitte and Bodo Moeller]
+
+ *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
+ ordering of SMIMECapabilities wasn't in "strength order" and there
+ was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
+ algorithm.
+ [Steve Henson]
+
+ *) Some ASN1 types with illegal zero length encoding (INTEGER,
+ ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
+ [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
+
+ *) Merge in my S/MIME library for OpenSSL. This provides a simple
+ S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
+ functionality to handle multipart/signed properly) and a utility
+ called 'smime' to call all this stuff. This is based on code I
+ originally wrote for Celo who have kindly allowed it to be
+ included in OpenSSL.
+ [Steve Henson]
+
+ *) Add variants des_set_key_checked and des_set_key_unchecked of
+ des_set_key (aka des_key_sched). Global variable des_check_key
+ decides which of these is called by des_set_key; this way
+ des_check_key behaves as it always did, but applications and
+ the library itself, which was buggy for des_check_key == 1,
+ have a cleaner way to pick the version they need.
+ [Bodo Moeller]
+
+ *) New function PKCS12_newpass() which changes the password of a
+ PKCS12 structure.
+ [Steve Henson]
+
+ *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
+ dynamic mix. In both cases the ids can be used as an index into the
+ table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
+ functions so they accept a list of the field values and the
+ application doesn't need to directly manipulate the X509_TRUST
+ structure.
+ [Steve Henson]
+
+ *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
+ need initialising.
+ [Steve Henson]
+
+ *) Modify the way the V3 extension code looks up extensions. This now
+ works in a similar way to the object code: we have some "standard"
+ extensions in a static table which is searched with OBJ_bsearch()
+ and the application can add dynamic ones if needed. The file
+ crypto/x509v3/ext_dat.h now has the info: this file needs to be
+ updated whenever a new extension is added to the core code and kept
+ in ext_nid order. There is a simple program 'tabtest.c' which checks
+ this. New extensions are not added too often so this file can readily
+ be maintained manually.
+
+ There are two big advantages in doing things this way. The extensions
+ can be looked up immediately and no longer need to be "added" using
+ X509V3_add_standard_extensions(): this function now does nothing.
+ [Side note: I get *lots* of email saying the extension code doesn't
+ work because people forget to call this function]
+ Also no dynamic allocation is done unless new extensions are added:
+ so if we don't add custom extensions there is no need to call
+ X509V3_EXT_cleanup().
+ [Steve Henson]
+
+ *) Modify enc utility's salting as follows: make salting the default. Add a
+ magic header, so unsalted files fail gracefully instead of just decrypting
+ to garbage. This is because not salting is a big security hole, so people
+ should be discouraged from doing it.
+ [Ben Laurie]
+
+ *) Fixes and enhancements to the 'x509' utility. It allowed a message
+ digest to be passed on the command line but it only used this
+ parameter when signing a certificate. Modified so all relevant
+ operations are affected by the digest parameter including the
+ -fingerprint and -x509toreq options. Also -x509toreq choked if a
+ DSA key was used because it didn't fix the digest.
+ [Steve Henson]
+
+ *) Initial certificate chain verify code. Currently tests the untrusted
+ certificates for consistency with the verify purpose (which is set
+ when the X509_STORE_CTX structure is set up) and checks the pathlength.
+
+ There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
+ this is because it will reject chains with invalid extensions whereas
+ every previous version of OpenSSL and SSLeay made no checks at all.
+
+ Trust code: checks the root CA for the relevant trust settings. Trust
+ settings have an initial value consistent with the verify purpose: e.g.
+ if the verify purpose is for SSL client use it expects the CA to be
+ trusted for SSL client use. However the default value can be changed to
+ permit custom trust settings: one example of this would be to only trust
+ certificates from a specific "secure" set of CAs.
+
+ Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
+ which should be used for version portability: especially since the
+ verify structure is likely to change more often now.
+
+ SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
+ to set them. If not set then assume SSL clients will verify SSL servers
+ and vice versa.
+
+ Two new options to the verify program: -untrusted allows a set of
+ untrusted certificates to be passed in and -purpose which sets the
+ intended purpose of the certificate. If a purpose is set then the
+ new chain verify code is used to check extension consistency.
+ [Steve Henson]
+
+ *) Support for the authority information access extension.
+ [Steve Henson]
+
+ *) Modify RSA and DSA PEM read routines to transparently handle
+ PKCS#8 format private keys. New *_PUBKEY_* functions that handle
+ public keys in a format compatible with certificate
+ SubjectPublicKeyInfo structures. Unfortunately there were already
+ functions called *_PublicKey_* which used various odd formats so
+ these are retained for compatibility: however the DSA variants were
+ never in a public release so they have been deleted. Changed dsa/rsa
+ utilities to handle the new format: note no releases ever handled public
+ keys so we should be OK.
+
+ The primary motivation for this change is to avoid the same fiasco
+ that dogs private keys: there are several incompatible private key
+ formats some of which are standard and some OpenSSL specific and
+ require various evil hacks to allow partial transparent handling and
+ even then it doesn't work with DER formats. Given the option anything
+ other than PKCS#8 should be dumped: but the other formats have to
+ stay in the name of compatibility.
+
+ With public keys and the benefit of hindsight one standard format
+ is used which works with EVP_PKEY, RSA or DSA structures: though
+ it clearly returns an error if you try to read the wrong kind of key.
+
+ Added a -pubkey option to the 'x509' utility to output the public key.
+ Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
+ (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
+ EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
+ that do the same as the EVP_PKEY_assign_*() except they up the
+ reference count of the added key (they don't "swallow" the
+ supplied key).
+ [Steve Henson]
+
+ *) Fixes to crypto/x509/by_file.c the code to read in certificates and
+ CRLs would fail if the file contained no certificates or no CRLs:
+ added a new function to read in both types and return the number
+ read: this means that if none are read it will be an error. The
+ DER versions of the certificate and CRL reader would always fail
+ because it isn't possible to mix certificates and CRLs in DER format
+ without choking one or the other routine. Changed this to just read
+ a certificate: this is the best we can do. Also modified the code
+ in apps/verify.c to take notice of return codes: it was previously
+ attempting to read in certificates from NULL pointers and ignoring
+ any errors: this is one reason why the cert and CRL reader seemed
+ to work. It doesn't check return codes from the default certificate
+ routines: these may well fail if the certificates aren't installed.
+ [Steve Henson]
+
+ *) Code to support otherName option in GeneralName.
+ [Steve Henson]
+
+ *) First update to verify code. Change the verify utility
+ so it warns if it is passed a self signed certificate:
+ for consistency with the normal behaviour. X509_verify
+ has been modified to it will now verify a self signed
+ certificate if *exactly* the same certificate appears
+ in the store: it was previously impossible to trust a
+ single self signed certificate. This means that:
+ openssl verify ss.pem
+ now gives a warning about a self signed certificate but
+ openssl verify -CAfile ss.pem ss.pem
+ is OK.
+ [Steve Henson]
+
+ *) For servers, store verify_result in SSL_SESSION data structure
+ (and add it to external session representation).
+ This is needed when client certificate verifications fails,
+ but an application-provided verification callback (set by
+ SSL_CTX_set_cert_verify_callback) allows accepting the session
+ anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
+ but returns 1): When the session is reused, we have to set
+ ssl->verify_result to the appropriate error code to avoid
+ security holes.
+ [Bodo Moeller, problem pointed out by Lutz Jaenicke]
+
+ *) Fix a bug in the new PKCS#7 code: it didn't consider the
+ case in PKCS7_dataInit() where the signed PKCS7 structure
+ didn't contain any existing data because it was being created.
+ [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
+
+ *) Add a salt to the key derivation routines in enc.c. This
+ forms the first 8 bytes of the encrypted file. Also add a
+ -S option to allow a salt to be input on the command line.
+ [Steve Henson]
+
+ *) New function X509_cmp(). Oddly enough there wasn't a function
+ to compare two certificates. We do this by working out the SHA1
+ hash and comparing that. X509_cmp() will be needed by the trust
+ code.
+ [Steve Henson]
+
+ *) SSL_get1_session() is like SSL_get_session(), but increments
+ the reference count in the SSL_SESSION returned.
+ [Geoff Thorpe <geoff@eu.c2.net>]
+
+ *) Fix for 'req': it was adding a null to request attributes.
+ Also change the X509_LOOKUP and X509_INFO code to handle
+ certificate auxiliary information.
+ [Steve Henson]
+
+ *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
+ the 'enc' command.
+ [Steve Henson]
+
+ *) Add the possibility to add extra information to the memory leak
+ detecting output, to form tracebacks, showing from where each
+ allocation was originated: CRYPTO_push_info("constant string") adds
+ the string plus current file name and line number to a per-thread
+ stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
+ is like calling CYRPTO_pop_info() until the stack is empty.
+ Also updated memory leak detection code to be multi-thread-safe.
+ [Richard Levitte]
+
+ *) Add options -text and -noout to pkcs7 utility and delete the
+ encryption options which never did anything. Update docs.
+ [Steve Henson]
+
+ *) Add options to some of the utilities to allow the pass phrase
+ to be included on either the command line (not recommended on
+ OSes like Unix) or read from the environment. Update the
+ manpages and fix a few bugs.
+ [Steve Henson]
+
+ *) Add a few manpages for some of the openssl commands.
+ [Steve Henson]
+
+ *) Fix the -revoke option in ca. It was freeing up memory twice,
+ leaking and not finding already revoked certificates.
+ [Steve Henson]
+
+ *) Extensive changes to support certificate auxiliary information.
+ This involves the use of X509_CERT_AUX structure and X509_AUX
+ functions. An X509_AUX function such as PEM_read_X509_AUX()
+ can still read in a certificate file in the usual way but it
+ will also read in any additional "auxiliary information". By
+ doing things this way a fair degree of compatibility can be
+ retained: existing certificates can have this information added
+ using the new 'x509' options.
+
+ Current auxiliary information includes an "alias" and some trust
+ settings. The trust settings will ultimately be used in enhanced
+ certificate chain verification routines: currently a certificate
+ can only be trusted if it is self signed and then it is trusted
+ for all purposes.
+ [Steve Henson]
+
+ *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
+ The problem was that one of the replacement routines had not been working
+ since SSLeay releases. For now the offending routine has been replaced
+ with non-optimised assembler. Even so, this now gives around 95%
+ performance improvement for 1024 bit RSA signs.
+ [Mark Cox]
+
+ *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
+ handling. Most clients have the effective key size in bits equal to
+ the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
+ A few however don't do this and instead use the size of the decrypted key
+ to determine the RC2 key length and the AlgorithmIdentifier to determine
+ the effective key length. In this case the effective key length can still
+ be 40 bits but the key length can be 168 bits for example. This is fixed
+ by manually forcing an RC2 key into the EVP_PKEY structure because the
+ EVP code can't currently handle unusual RC2 key sizes: it always assumes
+ the key length and effective key length are equal.
+ [Steve Henson]
+
+ *) Add a bunch of functions that should simplify the creation of
+ X509_NAME structures. Now you should be able to do:
+ X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
+ and have it automatically work out the correct field type and fill in
+ the structures. The more adventurous can try:
+ X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
+ and it will (hopefully) work out the correct multibyte encoding.
+ [Steve Henson]
+
+ *) Change the 'req' utility to use the new field handling and multibyte
+ copy routines. Before the DN field creation was handled in an ad hoc
+ way in req, ca, and x509 which was rather broken and didn't support
+ BMPStrings or UTF8Strings. Since some software doesn't implement
+ BMPStrings or UTF8Strings yet, they can be enabled using the config file
+ using the dirstring_type option. See the new comment in the default
+ openssl.cnf for more info.
+ [Steve Henson]
+
+ *) Make crypto/rand/md_rand.c more robust:
+ - Assure unique random numbers after fork().
+ - Make sure that concurrent threads access the global counter and
+ md serializably so that we never lose entropy in them
+ or use exactly the same state in multiple threads.
+ Access to the large state is not always serializable because
+ the additional locking could be a performance killer, and
+ md should be large enough anyway.
+ [Bodo Moeller]
+
+ *) New file apps/app_rand.c with commonly needed functionality
+ for handling the random seed file.
+
+ Use the random seed file in some applications that previously did not:
+ ca,
+ dsaparam -genkey (which also ignored its '-rand' option),
+ s_client,
+ s_server,
+ x509 (when signing).
+ Except on systems with /dev/urandom, it is crucial to have a random
+ seed file at least for key creation, DSA signing, and for DH exchanges;
+ for RSA signatures we could do without one.
+
+ gendh and gendsa (unlike genrsa) used to read only the first byte
+ of each file listed in the '-rand' option. The function as previously
+ found in genrsa is now in app_rand.c and is used by all programs
+ that support '-rand'.
+ [Bodo Moeller]
+
+ *) In RAND_write_file, use mode 0600 for creating files;
+ don't just chmod when it may be too late.
+ [Bodo Moeller]
+
+ *) Report an error from X509_STORE_load_locations
+ when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
+ [Bill Perry]
+
+ *) New function ASN1_mbstring_copy() this copies a string in either
+ ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
+ into an ASN1_STRING type. A mask of permissible types is passed
+ and it chooses the "minimal" type to use or an error if not type
+ is suitable.
+ [Steve Henson]
+
+ *) Add function equivalents to the various macros in asn1.h. The old
+ macros are retained with an M_ prefix. Code inside the library can
+ use the M_ macros. External code (including the openssl utility)
+ should *NOT* in order to be "shared library friendly".
+ [Steve Henson]
+
+ *) Add various functions that can check a certificate's extensions
+ to see if it usable for various purposes such as SSL client,
+ server or S/MIME and CAs of these types. This is currently
+ VERY EXPERIMENTAL but will ultimately be used for certificate chain
+ verification. Also added a -purpose flag to x509 utility to
+ print out all the purposes.
+ [Steve Henson]
+
+ *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
+ functions.
+ [Steve Henson]
+
+ *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
+ for, obtain and decode and extension and obtain its critical flag.
+ This allows all the necessary extension code to be handled in a
+ single function call.
+ [Steve Henson]
+
+ *) RC4 tune-up featuring 30-40% performance improvement on most RISC
+ platforms. See crypto/rc4/rc4_enc.c for further details.
+ [Andy Polyakov]
+
+ *) New -noout option to asn1parse. This causes no output to be produced
+ its main use is when combined with -strparse and -out to extract data
+ from a file (which may not be in ASN.1 format).
+ [Steve Henson]
+
+ *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
+ when producing the local key id.
+ [Richard Levitte <levitte@stacken.kth.se>]
+
+ *) New option -dhparam in s_server. This allows a DH parameter file to be
+ stated explicitly. If it is not stated then it tries the first server
+ certificate file. The previous behaviour hard coded the filename
+ "server.pem".
+ [Steve Henson]
+
+ *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
+ a public key to be input or output. For example:
+ openssl rsa -in key.pem -pubout -out pubkey.pem
+ Also added necessary DSA public key functions to handle this.
+ [Steve Henson]
+
+ *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
+ in the message. This was handled by allowing
+ X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
+ [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
+
+ *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
+ to the end of the strings whereas this didn't. This would cause problems
+ if strings read with d2i_ASN1_bytes() were later modified.
+ [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
+
+ *) Fix for base64 decode bug. When a base64 bio reads only one line of
+ data and it contains EOF it will end up returning an error. This is
+ caused by input 46 bytes long. The cause is due to the way base64
+ BIOs find the start of base64 encoded data. They do this by trying a
+ trial decode on each line until they find one that works. When they
+ do a flag is set and it starts again knowing it can pass all the
+ data directly through the decoder. Unfortunately it doesn't reset
+ the context it uses. This means that if EOF is reached an attempt
+ is made to pass two EOFs through the context and this causes the
+ resulting error. This can also cause other problems as well. As is
+ usual with these problems it takes *ages* to find and the fix is
+ trivial: move one line.
+ [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
+
+ *) Ugly workaround to get s_client and s_server working under Windows. The
+ old code wouldn't work because it needed to select() on sockets and the
+ tty (for keypresses and to see if data could be written). Win32 only
+ supports select() on sockets so we select() with a 1s timeout on the
+ sockets and then see if any characters are waiting to be read, if none
+ are present then we retry, we also assume we can always write data to
+ the tty. This isn't nice because the code then blocks until we've
+ received a complete line of data and it is effectively polling the
+ keyboard at 1s intervals: however it's quite a bit better than not
+ working at all :-) A dedicated Windows application might handle this
+ with an event loop for example.
+ [Steve Henson]
+
+ *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
+ and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
+ will be called when RSA_sign() and RSA_verify() are used. This is useful
+ if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
+ For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
+ should *not* be used: RSA_sign() and RSA_verify() must be used instead.
+ This necessitated the support of an extra signature type NID_md5_sha1
+ for SSL signatures and modifications to the SSL library to use it instead
+ of calling RSA_public_decrypt() and RSA_private_encrypt().
+ [Steve Henson]
+
+ *) Add new -verify -CAfile and -CApath options to the crl program, these
+ will lookup a CRL issuers certificate and verify the signature in a
+ similar way to the verify program. Tidy up the crl program so it
+ no longer accesses structures directly. Make the ASN1 CRL parsing a bit
+ less strict. It will now permit CRL extensions even if it is not
+ a V2 CRL: this will allow it to tolerate some broken CRLs.
+ [Steve Henson]
+
+ *) Initialize all non-automatic variables each time one of the openssl
+ sub-programs is started (this is necessary as they may be started
+ multiple times from the "OpenSSL>" prompt).
+ [Lennart Bang, Bodo Moeller]
+
+ *) Preliminary compilation option RSA_NULL which disables RSA crypto without
+ removing all other RSA functionality (this is what NO_RSA does). This
+ is so (for example) those in the US can disable those operations covered
+ by the RSA patent while allowing storage and parsing of RSA keys and RSA
+ key generation.
+ [Steve Henson]
+
+ *) Non-copying interface to BIO pairs.
+ (still largely untested)
+ [Bodo Moeller]
+
+ *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
+ ASCII string. This was handled independently in various places before.
+ [Steve Henson]
+
+ *) New functions UTF8_getc() and UTF8_putc() that parse and generate
+ UTF8 strings a character at a time.
+ [Steve Henson]
+
+ *) Use client_version from client hello to select the protocol
+ (s23_srvr.c) and for RSA client key exchange verification
+ (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
+ [Bodo Moeller]
+
+ *) Add various utility functions to handle SPKACs, these were previously
+ handled by poking round in the structure internals. Added new function
+ NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
+ print, verify and generate SPKACs. Based on an original idea from
+ Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
+ [Steve Henson]
+
+ *) RIPEMD160 is operational on all platforms and is back in 'make test'.
+ [Andy Polyakov]
+
+ *) Allow the config file extension section to be overwritten on the
+ command line. Based on an original idea from Massimiliano Pala
+ <madwolf@comune.modena.it>. The new option is called -extensions
+ and can be applied to ca, req and x509. Also -reqexts to override
+ the request extensions in req and -crlexts to override the crl extensions
+ in ca.
+ [Steve Henson]
+
+ *) Add new feature to the SPKAC handling in ca. Now you can include
+ the same field multiple times by preceding it by "XXXX." for example:
+ 1.OU="Unit name 1"
+ 2.OU="Unit name 2"
+ this is the same syntax as used in the req config file.
+ [Steve Henson]
+
+ *) Allow certificate extensions to be added to certificate requests. These
+ are specified in a 'req_extensions' option of the req section of the
+ config file. They can be printed out with the -text option to req but
+ are otherwise ignored at present.
+ [Steve Henson]
+
+ *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
+ data read consists of only the final block it would not decrypted because
+ EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
+ A misplaced 'break' also meant the decrypted final block might not be
+ copied until the next read.
+ [Steve Henson]
+
+ *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
+ a few extra parameters to the DH structure: these will be useful if
+ for example we want the value of 'q' or implement X9.42 DH.
+ [Steve Henson]
+
+ *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
+ provides hooks that allow the default DSA functions or functions on a
+ "per key" basis to be replaced. This allows hardware acceleration and
+ hardware key storage to be handled without major modification to the
+ library. Also added low level modexp hooks and CRYPTO_EX structure and
+ associated functions.
+ [Steve Henson]
+
+ *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
+ as "read only": it can't be written to and the buffer it points to will
+ not be freed. Reading from a read only BIO is much more efficient than
+ a normal memory BIO. This was added because there are several times when
+ an area of memory needs to be read from a BIO. The previous method was
+ to create a memory BIO and write the data to it, this results in two
+ copies of the data and an O(n^2) reading algorithm. There is a new
+ function BIO_new_mem_buf() which creates a read only memory BIO from
+ an area of memory. Also modified the PKCS#7 routines to use read only
+ memory BIOs.
+ [Steve Henson]
+
+ *) Bugfix: ssl23_get_client_hello did not work properly when called in
+ state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
+ a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
+ but a retry condition occured while trying to read the rest.
+ [Bodo Moeller]
+
+ *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
+ NID_pkcs7_encrypted by default: this was wrong since this should almost
+ always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
+ the encrypted data type: this is a more sensible place to put it and it
+ allows the PKCS#12 code to be tidied up that duplicated this
+ functionality.
+ [Steve Henson]
+
+ *) Changed obj_dat.pl script so it takes its input and output files on
+ the command line. This should avoid shell escape redirection problems
+ under Win32.
+ [Steve Henson]
+
+ *) Initial support for certificate extension requests, these are included
+ in things like Xenroll certificate requests. Included functions to allow
+ extensions to be obtained and added.
+ [Steve Henson]
+
+ *) -crlf option to s_client and s_server for sending newlines as
+ CRLF (as required by many protocols).
+ [Bodo Moeller]
+
+ Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
+
+ *) Install libRSAglue.a when OpenSSL is built with RSAref.
+ [Ralf S. Engelschall]
+
+ *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
+ [Andrija Antonijevic <TheAntony2@bigfoot.com>]
+
+ *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
+ program.
+ [Steve Henson]
+
+ *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
+ DH parameters/keys (q is lost during that conversion, but the resulting
+ DH parameters contain its length).
+
+ For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
+ much faster than DH_generate_parameters (which creates parameters
+ where p = 2*q + 1), and also the smaller q makes DH computations
+ much more efficient (160-bit exponentiation instead of 1024-bit
+ exponentiation); so this provides a convenient way to support DHE
+ ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
+ utter importance to use
+ SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
+ or
+ SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
+ when such DH parameters are used, because otherwise small subgroup
+ attacks may become possible!
+ [Bodo Moeller]
+
+ *) Avoid memory leak in i2d_DHparams.
+ [Bodo Moeller]
+
+ *) Allow the -k option to be used more than once in the enc program:
+ this allows the same encrypted message to be read by multiple recipients.
+ [Steve Henson]
+
+ *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
+ an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
+ it will always use the numerical form of the OID, even if it has a short
+ or long name.
+ [Steve Henson]
*) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
method only got called if p,q,dmp1,dmq1,iqmp components were present,
otherwise bn_mod_exp was called. In the case of hardware keys for example
no private key components need be present and it might store extra data
- in the RSA structure, which cannot be accessed from bn_mod_exp. By setting
- RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for private key
- operations.
+ in the RSA structure, which cannot be accessed from bn_mod_exp.
+ By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
+ private key operations.
[Steve Henson]
*) Added support for SPARC Linux.
The PEM[_ASN1]_{read,write}... functions and macros now take an
additional void * argument, which is just handed through whenever
the password callback is called.
- [Damien Miller <dmiller@ilogic.com.au>, with tiny changes by Bodo Moeller]
+ [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
New function SSL_CTX_set_default_passwd_cb_userdata.
(both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
problems not only on Windows, but also on some Unix platforms.
To avoid problematic command lines, these definitions are now in an
- auto-generated file, which also defines DATE and thus replaces
- crypto/date.h. Standard "make" builds use crypto/buildinf.h,
- mk1mf.pl builds use crypto/mk1mfinf.h (created by mk1mf.pl).
+ auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
+ for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
[Bodo Moeller]
*) MIPS III/IV assembler module is reimplemented.
projects / openssl.git / blobdiff